Verify a U.S. passport online: complete guide in 4 checks (MRZ, security, validity)

Article updated in February 2026 to reflect the latest developments in U.S. passports and online document verification tools.

The U.S. passport is an official document widely used as proof of identity in many contexts: KYC checks, international travel, administrative procedures, digital platforms, or banking processes.

Like any identity document, it may however be subject to documentary fraud attempts: expired passports, visual alterations, inconsistencies between displayed data and the MRZ, or tampering with security features.

How can you verify a U.S. passport online and ensure that the document presented is authentic?

The answer is provided in this guide through 4 essential verification steps.

Before any visual inspection, it is now possible to carry out an initial automatic verification using a simple image of the passport.

This step allows in particular:

• automatic reading of the MRZ
• validation of check digits
• consistency checks between fields (name, date of birth, sex, nationality, document number, expiration date)
• detection of data entry errors or common inconsistencies

⚠️ There is no public database that allows official validation of a U.S. passport.

Online verification is therefore based on documentary analysis and must be complemented by a visual inspection of security features.

When access to the original document is possible, the first step is to examine the overall appearance of the passport.

The document must show no signs of cutting, delamination, gluing, overprinting, or visible alteration.
Particular attention should be paid to:

• the identity page
• the photo area
• page edges
• embossed or raised printed areas

Any signs of scratching, heating, partial replacement, or retouching should be considered a warning signal.

The second step is to verify the consistency of the information visible on the passport and its correspondence with the data encoded in the MRZ.

Key elements to cross-check:

• Document number: visible on the identity page and in the second MRZ line
• Date of birth: shown on the passport and in the MRZ (YYMMDD format)
• Surname and given name(s): visible on the document and in the first MRZ line
• Sex of the holder: indicated by “M” or “F”, visible on the passport and in the MRZ
• Expiration date: shown on the identity page and in the MRZ
• Issuing country and nationality: consistent with the ISO codes present in the MRZ

Any discrepancy, even minor, between visible fields and the MRZ should be treated as a warning requiring further investigation.

The document number can be found in two different places: at the top right on the front and at the beginning of the second line of the MRZ band.

Both must be identical:

The date of birth of the holder can also be found in two distinct places: in the middle of the front and in the middle of the second MRZ line in the format YYMMDD:

Similarly for the last name and given names, which can be found on the document and in the first MRZ line:

The holder’s gender is symbolized by “M” for males and “F” for females. This information can be found on the front and in the second MRZ line:

Another element present twice on the document is the expiration date, which can be found on the front and in the second MRZ line in the format YYMMDD:

The issuing country can be found in two places on the document: at the top of the front and at the beginning of the first MRZ line.

The holder’s nationality can be found in the second MRZ line in ISO 3166-1 format:

The U.S. passport contains a two-line MRZ that complies with ICAO standards.

The MRZ includes the main document data in a standardized format and integrates five check digits designed to detect reading errors and many types of forgery attempts.

MRZ analysis allows you to:

• verify the document structure
• mathematically validate the encoded data
• detect transcription errors or inconsistencies

The check digits are based on the standard ICAO algorithm using fixed weights (7, 3, and 1), making this verification reliable, fast, and easy to automate.

1. Document Type: 2 characters, code indicating the type of document, represented by the letters “P<“.
2. Issuing Country: 3 characters, the ISO 3166-1 alpha-3 code of the issuing country.
3. Last Name(s): holder’s last name(s), separated by a chevron “<“.
4. Given Name(s): holder’s given name(s), separated from the last name by two chevrons, and separated among themselves by a chevron “<“.

1. Document Number: 9 characters, the passport number printed on the document.
2. Check Digit: 1 character, check digit for the document number.
3. Nationality: 3 characters, nationality of the holder.
4. Date of Birth: 6 digits, holder’s birth date in YYMMDD format.
5. Check Digit: 1 character, check digit for the date of birth.
6. Gender: 1 character, holder’s gender (“M” or “F”).
7. Expiration Date: 6 digits, passport expiration date in YYMMDD format.
8. Check Digit: 1 character, check digit for the concatenation of characters line 2 positions 44-54, line 2 positions 57-64, line 2 positions 65-87.

A US passport contains 5 check digits (or security keys) that validate the preceding information.

They prevent transcription errors or intentional or unintentional modifications.

The algorithm used to create and validate the check digits is common to all identity documents: characters have weights, which are multiplied by a factor depending on their position in the string (7, 3, and 1).

Digits have their face value (“0” equals 0, “1” equals 1, etc. up to “9” equals 9), the chevron “<” also has a value of 0, while letters are weighted starting at 10 for “A”, 11 for “B” up to 35 for “Z”.

Let’s take as an example the check digit for the date of birth from the specimen above.

The string to validate is: “650205”.

To calculate the check digit, we proceed as follows:

– “6” has a value of 6 and is in the first position, so multiply by 7: 6 * 7 = 42

– “5” has a value of 5 and is in the second position, so multiply by 3: 5 * 3 = 15, add to previous 42 for a total of 57.

– “0” has a value of 0 and is in the third position, so multiply by 1: 0 * 1 = 0, add to previous 57 for a total of 57.

– 2 * 7 = 14 and 14 + 57 = 71

– 0 * 3 = 0 and 0 + 71 = 71

– 5 * 1 = 5 and 5 + 71 = 76

We get a total of 76, from which we extract modulo 10 (the remainder of the Euclidean division by 10), which keeps only the last digit, “6”.

Our check digit is therefore valid since 6 appears on the document!

This final step aims to confirm the physical authenticity of the U.S. passport.

It complements documentary analysis by examining security features that are difficult to reproduce, including:

• holographic devices and optically variable features
• secondary “ghost” image
• secure printing techniques and microtext
• elements visible only under ultraviolet (UV) light
• printing processes specific to the identity page

Some of these features can be checked with the naked eye, while others require specialized equipment.

This is an iridescent ink or holographic patch that changes color (green ↔ gold, for example) depending on the viewing angle. The microprism or thin layer structure is very difficult to copy; a fixed or dull shade indicates a counterfeit.

A miniature black & white version of the main portrait is printed or engraved in a corner of the page. If the main photo is replaced, the ghost will no longer match, revealing the alteration.

Under UV light, the photo frame (and sometimes the portrait itself) shows hidden fluorescent patterns. Their shape and position are calibrated; lack of response or misalignment indicates fraud.

Identity pages use a combination of secure offset, intaglio, and microprinting (< 0.2 mm). Under magnification, letters must remain sharp; ink bleeding or pixelation reveal digital reproduction.

You now have a structured method to verify a U.S. passport online: MRZ analysis, data consistency checks, followed by visual inspection of security features.

Without specialized equipment, this combined approach already makes it possible to detect a large proportion of common documentary fraud.

To go further, it is also possible to use an online document verification solution.

For example, TrustDocHub allows automatic verification of a U.S. passport from an image, with results displayed directly within the application.